My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this

It could be a mite, like scabies, or ringworm. Please have it checked out by a vet, because they can be transmitted to people.

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Could be either age or diet. I would call a local pet shop and ask. I know dogs and cats can have similar issues though if given cheap food.

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Excessive spanking

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Old age.

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Could be a mite. This can cause hair loss and dry itchy skin. Find a vet that sees Guinea Pigs and take him in for an exam

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

That sounds like ringworm. I would pay a visit to the vet to make sure so you can treat it before you end up with it.

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Could be mites or a vitamin deficiency, or real dirty skin. Take it to a vet.

The web below will help you keep your piggie healthy if you follow the care and feeding, and bedding suggestions.

My Guinea Pig's skin seems to be very dry and his hair is rubbed off on his butt. What is this from???

Bedding allergy and/or urine. How often is his cage cleaned? And what kind of beddign is he living on?